Home / 389,928.93-538,082.66-217,812.73

Finding the Fourth Proportional to 389,928.93, 538,082.66 and 217,812.73

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Solution

The fourth proportional to 389,928.93, 538,082.66 and 217,812.73 is: 300,570.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,928.93 : 538,082.66 = 217,812.73 : x
  2. Step 2: Convert to fraction form
    389,928.93/538,082.66 = 217,812.73/x
  3. Step 3: Cross multiply
    389,928.93x = 538,082.66 × 217,812.73
  4. Step 4: Simplify right side
    389,928.93x = 117,201,253,140.26
  5. Step 5: Solve for x
    x = 117,201,253,140.26/389,928.93
  6. Step 6: Final answer
    x = 300,570.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.